I am a HUGE Lord of the Rings fan. If you have questions about plot, characters, Tolkien's possible intentions with the books, the movies or pretty much anything else, then I'm your man!
I have read the books multiple times (I've actually lost count!). I have done speeches on Tolkien, Peter Jackson and Lord of the Rings. I also own a load of LOTR merchandise - movie location guidebook, movie companion book, the Ring, Anduril the Sword... the list goes on! I'm also in contact with other fanatics so if there is anything that I can't answer I'm sure they may be able to.
No 'official' credentials, but ask anyone who knows me and they will tell you that I know more than enough to be an 'expert' on LOTR!